diff options
| author | Janosch Frank <frankja@linux.ibm.com> | 2020-03-19 09:19:12 -0400 |
|---|---|---|
| committer | Cornelia Huck <cohuck@redhat.com> | 2020-04-29 14:31:31 +0200 |
| commit | 1cca8265499d394d9ed4bfb75bd6e7265b529f89 (patch) | |
| tree | aa1e89223c0b83e4aac515052c76d9e26637371d /target/s390x/mmu_helper.c | |
| parent | 2585e507ffa1da01b57dbea26b1e1fe507d27198 (diff) | |
s390x: Add SIDA memory ops
Protected guests save the instruction control blocks in the SIDA
instead of QEMU/KVM directly accessing the guest's memory.
Let's introduce new functions to access the SIDA.
The memops for doing so are available with KVM_CAP_S390_PROTECTED, so
let's check for that.
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Message-Id: <20200319131921.2367-8-frankja@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Diffstat (limited to 'target/s390x/mmu_helper.c')
| -rw-r--r-- | target/s390x/mmu_helper.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/target/s390x/mmu_helper.c b/target/s390x/mmu_helper.c index 0be2f300bb..7d9f3059cd 100644 --- a/target/s390x/mmu_helper.c +++ b/target/s390x/mmu_helper.c @@ -474,6 +474,20 @@ static int translate_pages(S390CPU *cpu, vaddr addr, int nr_pages, return 0; } +int s390_cpu_pv_mem_rw(S390CPU *cpu, unsigned int offset, void *hostbuf, + int len, bool is_write) +{ + int ret; + + if (kvm_enabled()) { + ret = kvm_s390_mem_op_pv(cpu, offset, hostbuf, len, is_write); + } else { + /* Protected Virtualization is a KVM/Hardware only feature */ + g_assert_not_reached(); + } + return ret; +} + /** * s390_cpu_virt_mem_rw: * @laddr: the logical start address |